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The sky on January 28, 2020 — as it really was

That day the Sun stood in Capricornus, while the horoscope says "Aquarius". The gap is 24.1° of precession.

РЫБЫОВЕНТЕЛЕЦБЛИЗНЕЦЫРАКЛЕВДЕВАВЕСЫСКОРПИОНЗМЕЕНОСЕЦСТРЕЛЕЦКОЗЕРОГВОДОЛЕЙ ♈︎♉︎♊︎♋︎♌︎♍︎♎︎♏︎♐︎♑︎♒︎♓︎ ♂–♀ 90.7°♂–☽ 91.2° ♂︎17° ♃︎12° ♄︎24° ☉︎8° ☿︎20° ♀︎17° ☽︎18°

Bodies on the ecliptic (noon UTC)

  • ☉︎ Sun — 308.0° · sign Aquarius · constellation Capricornus
  • ☽︎ Moon — 348.2° · sign Pisces · constellation Aquarius
  • ☿︎ Mercury — 320.1° · sign Aquarius · constellation Capricornus
  • ♀︎ Venus — 347.7° · sign Pisces · constellation Aquarius
  • ♂︎ Mars — 257.0° · sign Sagittarius · constellation Ophiuchus
  • ♃︎ Jupiter — 282.9° · sign Capricorn · constellation Sagittarius
  • ♄︎ Saturn — 294.6° · sign Capricorn · constellation Sagittarius
  • ☽︎ Moon 12% illuminated

astronomy-engine ephemerides (VSOP87/ELP), IAU 1930 constellation boundaries. Positions accurate to a fraction of a degree.

The day’s dossier, from real data

Checkable facts with a tag and a source; the classical reading is in the chart.

  1. The Moon that day [EXACT]

    waxing crescent, 12% lit; the Moon was 404,364 km away.

    astronomy-engine
  2. How far Earth has travelled since [EXACT]

    6.7 orbits of the Sun — 6,284 million km, that is 8,174 return trips to the Moon; 2,442 rotations of Earth; with the Sun — 48.5 billion km around the Galactic centre, 1.9 light-days.

    29.78 km/s along the orbit; 230 km/s around the Galactic centre
  3. Mars then and now [EXACT]

    On that day Mars was 296 million km away; today it is 244 million km (closer by 1.2×).

    astronomy-engine; checked against JPL Horizons for 2026-09-14
  4. Solar cycle [ESTIMATE]

    That day fell in solar cycle 25, right at the minimum (2% through the cycle).

    SILSO smoothed minima
  5. When the sky repeats [EXACT]

    Mars returns to that day’s point of its orbit on August 7, 2027; Jupiter — in 2032; a full moon exactly on this date — January 27, 2032

    sidereal periods: Mars 686.98 d, Jupiter 11.862 yr
  6. How far the sky has drifted since [EXACT]

    The vernal point has shifted 324″ since that day; the real constellations now sit 24.1° away from the astrologers’ “signs”.

    precession 50.29″/yr
  7. Picture of the day [EXACT]

    NASA Astronomy Picture of the Day for this date: apod.nasa.gov/apod/ap200128.html

    NASA APOD

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